Fleuret automates penetration testing of applications, APIs and infrastructure using AI agents. Its platform helps businesses continuously detect, demonstrate and fix vulnerabilities.
Founding Engineer
Fleuret AI is hiring a Founding Engineer to join the founding team in Paris. The role covers infrastructure, Hortense, the benchmark harness or the agent stack, and calls for experience delivering production systems end to end.
Information about Fleuret AI
- Sector
- Software and internet
- Model
- B2B
- Company type
- Venture-backed
- Stage
- Startup early-stage
- Headquarters
- Paris
- Official domain
- fleuret.ai
- Founded
- 2026 · 0 years
- Published headcount
- 10 employees
- Latest funding round
- Seed · 2026-10-01
- Amount announced
- 4 000 000 $
- Open jobs
- 7
Investors mentioned
Job details
The full description published by Fleuret AI.
Pick your wedge: infrastructure, Hortense, the benchmark harness or the agent stack itself.What helps: production systems you shipped end to end. You would join the founding team.Apply (Founding Engineer) →
Requirements
- production systems shipped end to end
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More jobs at Fleuret AI
6 other jobs currently available.
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Fleuret AI is seeking an Offensive Security Engineer in Paris to manage a payload library and the human review of agent findings. The role also involves contributing to agent logic, with pentesting or offensive security experience desirable.
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Fleuret AI is seeking an AI Engineer in Paris to expand Émile’s roster of agents, its memory over long-running executions and its detection of execution completion. The role requires experience in applied machine learning in production, designing agent loops, in-depth Python expertise and deploying systems built on foundation models.
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Fleuret AI is looking for a Founding Engineer in Paris to contribute to infrastructure, Hortense, the benchmark harness or the agent stack. The role offers a flexible scope within the founding team and requires at least five years of experience shipping production systems end to end.
- Startup early-stage
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Fleuret AI is looking for a Senior Offensive Security Engineer based in Paris. The successful candidate will join the offensive security operation to lead the agent's payload library and human-in-the-loop review layer, with experience in pentesting or offensive operations.
- Startup early-stage
- Latest funding 1 month ago
- 0 years old
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Fleuret AI is looking for an AI Engineer to expand the Émile agent roster and build the supervisor's memory layer and the termination oracle. The role is based in Paris and requires at least three years of experience in applied machine learning, strong Python skills and experience with agent loops and production systems built on foundation models.
- Startup early-stage
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